/* 头部样式 */
#head .headMain {
  width: 1100px;
  height: 80px;
  margin: 0 auto;
  position: relative;
}

#wrap {
  width: 100%;
}

#head {
  width: 100%;
  background-color: #fff !important;
}

#head .headMain .logo {
  float: left;
  margin-top: 30px;
}

#head .headMain .nav {
  float: right;
  margin-top: 50px;
}

#head .headMain .nav li {
  float: left;
  margin-left: 40px;
  position: relative;
  list-style: none;
}

#head .headMain .nav li .up {
  color: black;
  position: absolute;
  width: 0;
  overflow: hidden;
  transition: width 0.8s;
  white-space: nowrap;
}

#head .headMain .nav li .down {
  color: #009ee0;
}

#head .headMain .nav li:hover .up {
  width: 100%;
}

/* 箭头样式 */
#head .headMain .arrow {
  width: 21px;
  height: 11px;
  background: url(./imgs/menuIndicator.png);
  position: absolute;
  left: 50%;
  bottom: -11px;
  z-index: 2;
  transition: left 0.8s;
}

#content {
  position: relative;
  overflow: hidden;
  width: 100%;
}

#content > .list {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  transition: top 0.8s;
}

#content > .list > li {
  position: relative;
  overflow: hidden;
  background-position: 50% 50% !important;
}

#content > .list > li > section {
  width: 1100px;
  height: 520px;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
}

/* 第一屏 */
#content > .list > .home {
  background: url(imgs/bg1.jpg) no-repeat;
}

#content > .list > .home .home1 {
  width: 100%;
  height: 100%;
  perspective: 800px;
  transform-style: preserve-3d;
}

#content > .list > .home .home1 > li {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  visibility: hidden;
}

#content > .list > .home .home1 > li > div {
  color: white;
  text-align: center;
  margin-top: 200px;
}

#content > .list > .home .home1 > li:nth-child(1) {
  background: #dc6c5f;
}

#content > .list > .home .home1 > li:nth-child(2) {
  background: #95dc84;
}

#content > .list > .home .home1 > li:nth-child(3) {
  background: #64b9d2;
}

#content > .list > .home .home1 > li:nth-child(4) {
  background: #a288dd;
}

/* 圆点布局 */
#content > .list > .home .home2 {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  text-align: center;
}

#content > .list > .home .home2 > li {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  margin: 0 2px;
  background-color: rgba(255, 255, 255, 0.5);
  display: inline-block;
  box-shadow: 0 0 4px rgba(25, 25, 25, 0.8);
  cursor: pointer;
}

#content > .list > .home .home1 > li.active {
  visibility: visible;
}

#content > .list > .home .home2 > li.active {
  background-color: #fff;
  cursor: default;
}

/*从左往右 leftHide  rightShow*/
#content > .list > .home .home1 > li.leftHide {
  visibility: hidden;
  animation: 1s leftHide 1 linear;
}

#content > .list > .home .home1 > li.rightShow {
  visibility: visible;
  animation: 1s rightShow 1 linear;
}

@keyframes leftHide {
  0% {
    visibility: visible;
  }

  50% {
    transform: translateX(-40%) rotateY(30deg) scale(0.8);
  }

  100% {
    transform: translateZ(-200px);
  }
}

@keyframes rightShow {
  0% {
    visibility: hidden;
    transform: translateZ(-200px);
  }

  50% {
    transform: translateX(40%) rotateY(-30deg) scale(0.8);
  }
}

/*从右往左 leftShow  rightHide*/
#content > .list > .home .home1 > li.leftShow {
  visibility: visible;
  animation: 1s leftShow 1 linear;
}

#content > .list > .home .home1 > li.rightHide {
  visibility: hidden;
  animation: 1s rightHide 1 linear;
}

@keyframes leftShow {
  0% {
    visibility: hidden;
    transform: translateZ(-200px);
  }

  50% {
    transform: translateX(-40%) rotateY(30deg) scale(0.8);
  }
}

@keyframes rightHide {
  0% {
    visibility: visible;
  }

  50% {
    transform: translateX(40%) rotateY(-30deg) scale(0.8);
  }

  100% {
    transform: translateZ(-200px);
  }
}

/* 第二屏    */
#content > .list .course {
  background: url(imgs/bg2.jpg) no-repeat;
}

#content > .list > .course .course1 {
  margin: 50px;
  position: relative;
  z-index: 2;
}

#content > .list > .course .course2 {
  margin-left: 50px;
  width: 400px;
  position: relative;
  z-index: 2;
}

#content > .list > .course .course3 {
  width: 480px;
  position: absolute;
  right: 50px;
  top: 70px;
  z-index: 2;
}

#content > .list > .course .course3 .item {
  float: left;
  width: 120px;
  height: 132px;
  position: relative;
  perspective: 800px;
  transform-style: preserve-3d;
  cursor: pointer;
}

#content > .list > .course .course3 .item .face,
#content > .list > .course .course3 .item .backFace {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: 15px;
  transition: transform 1s;
}

#content > .list > .course .course3 .item .backFace {
  background-position: 50% 50% !important;
}

#content > .list > .course .course3 .item:nth-of-type(1) .backFace {
  background: url(./imgs/bks.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(2) .backFace {
  background: url(./imgs/binoli.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(3) .backFace {
  background: url(./imgs/gu.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(4) .backFace {
  background: url(./imgs/lbs.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(5) .backFace {
  background: url(./imgs/apcoa.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(6) .backFace {
  background: url(./imgs/hlx.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(7) .backFace {
  background: url(./imgs/bks.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(8) .backFace {
  background: url(./imgs/leonberg.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(9) .backFace {
  background: url(./imgs/tata.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(10) .backFace {
  background: url(./imgs/bks.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(11) .backFace {
  background: url(./imgs/pcwelt.png) no-repeat;
}

#content > .list > .course .course3 .item:nth-of-type(12) .backFace {
  background: url(./imgs/bks.png) no-repeat;
}

#content > .list > .course .course3 .item .face {
  transform: rotateY(180deg);
  backface-visibility: hidden;
  background-color: #009ee0;
  color: #fff;
}

#content > .list > .course .course3 .item:hover .face {
  transform: rotateY(360deg);
}

#content > .list > .course .course3 .item:hover .backFace {
  transform: rotateY(180deg);
}

#content > .list > .course .course3 .line {
  width: 9px;
  height: 410px;
  position: absolute;
  background: url(./imgs/plus_row.png) no-repeat;
  top: -7px;
}

#content > .list > .course .course3 .line:nth-of-type(1) {
  left: -5px;
}

#content > .list > .course .course3 .line:nth-of-type(2) {
  left: 115px;
}

#content > .list > .course .course3 .line:nth-of-type(3) {
  left: 235px;
}

#content > .list > .course .course3 .line:nth-of-type(4) {
  left: 355px;
}

#content > .list > .course .course3 .line:nth-of-type(5) {
  left: 475px;
}

/* 第三屏 */
#content > .list .works {
  background: url(imgs/bg4.jpg) no-repeat;
}

#content > .list > .works .works1 {
  margin: 50px 0 100px 50px;
  position: relative;
  z-index: 2;
}

#content > .list > .works .works2 {
  margin-left: 50px;
  position: relative;
  z-index: 2;
}

#content > .list > .works .works2 .item {
  float: left;
  width: 220px;
  height: 133px;
  margin: 0 1px;
  position: relative;
  overflow: hidden;
}

#content > .list > .works .works2 .item .mask {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  background-color: black;
  box-sizing: border-box;
  padding: 10px;
  opacity: 0;
  color: #fff;
  transition: opacity 1.2s;
}

#content > .list > .works .works2 .item .mask .icon {
  width: 32px;
  height: 34px;
  /* background-color: burlywood; */
  margin: 0 auto;
  margin-top: 10px;
  background: url(./imgs/zoomico.png);
  transition: background-position 1.2s;
}

#content > .list > .works .works2 .item .mask .icon:hover {
  background-position: 0 -35px;
  transition: background-position 1.2s;
}

#content > .list > .works .works2 .item:hover .mask {
  opacity: 0.8;
}

#content > .list > .works .works2 img {
  transition: transform 1s;
}

#content > .list > .works .works2 .item:hover img {
  transform: rotate(30deg) scale(1.5);
}

#content > .list > .works .works2 .item:last-of-type {
  width: 332px;
}

#content > .list > .works .works3 {
  width: 167px;
  height: 191px;
  background: url(./imgs/robot.png) no-repeat;
  position: absolute;
  z-index: 2;
  left: 900px;
  top: 170px;
  animation: works3Move 5s linear infinite;
}

@keyframes works3Move {
  49% {
    transform: translateX(-500px) rotateY(0);
  }

  50% {
    transform: translateX(-500px) rotateY(180deg);
  }

  100% {
    transform: translateX(0) rotateY(180deg);
  }
}

#content > .list .about {
  background: url(imgs/bg3.jpg) no-repeat;
}

#content > .list .about .about1 {
  margin: 50px 0 100px 50px;
}

#content > .list .about .about2 {
  margin-left: 50px;
  width: 400px;
}

#content > .list .about .about4 {
  width: 357px;
  height: 998px;
  position: absolute;
  left: 50%;
  top: -100px;
  background: url(./imgs/greenLine.png);
}

#content > .list .about .about3 > .item {
  width: 260px;
  height: 200px;
  border: 5px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
  position: absolute;
  z-index: 2;
  overflow: hidden;
  cursor: pointer;
}

#content > .list .about .about3 > .item:nth-child(1) {
  left: 750px;
  top: 50px;
}

#content > .list .about .about3 > .item:nth-child(2) {
  left: 600px;
  top: 290px;
}

#content > .list .about .about3 > .item > span,
#content > .list .about .about3 > .item > ul {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}

#content > .list .about .about3 > .item > ul > li {
  float: left;
  position: relative;
  overflow: hidden;
}

#content > .list .about .about3 > .item > ul > li > img {
  position: absolute;
  transition: top 0.5s, left 0.5s;
}

#content > .list .about .about3 > .item:nth-child(1) > span {
  background: url(./imgs/about2.jpg) no-repeat;
  transform: scale(1.5);
  transition: transform 1s;
}

#content > .list .about .about3 > .item:nth-child(2) > span {
  background: url(./imgs/about4.jpg) no-repeat;
  transform: scale(1.5);
  transition: transform 1s;
}

#content > .list .about .about3 > .item:hover span {
  transform: scale(1);
}

/* 第五屏 */
#content > .list > .team {
  background: url(imgs/bg5.jpg) no-repeat;
}

#content > .list > .team .team1 {
  width: 400px;
  margin: 50px;
  float: left;
}

#content > .list .team .team2 {
  width: 400px;
  margin: 50px;
  float: right;
}

#content > .list > .team .team3 {
  width: 944px;
  height: 448px;
  position: absolute;
  top: 240px;
  left: 50%;
  transform: translateX(-50%);
}

#content > .list > .team .team3 ul {
  position: relative;
  height: 100%;
}

#content > .list > .team .team3 ul > li {
  width: 118px;
  height: 100%;
  background: url("./imgs/team.png") no-repeat;
  float: left;
  transition: opacity 1s;
}

#content > .list > .team .team3 ul > li:nth-child(1) {
  background-position: 0 0;
}

#content > .list > .team .team3 ul > li:nth-child(2) {
  background-position: -118px 0;
}

#content > .list > .team .team3 ul > li:nth-child(3) {
  background-position: -236px 0;
}

#content > .list > .team .team3 ul > li:nth-child(4) {
  background-position: -354px 0;
}

#content > .list > .team .team3 ul > li:nth-child(5) {
  background-position: -472px 0;
}

#content > .list > .team .team3 ul > li:nth-child(6) {
  background-position: -590px 0;
}

#content > .list > .team .team3 ul > li:nth-child(7) {
  background-position: -708px 0;
}

#content > .list > .team .team3 ul > li:nth-child(8) {
  background-position: -826px 0;
}

/* 圆点 */
#content > .dot {
  position: fixed;
  right: 10px;
  top: 50%;
}

#content > .dot > li {
  width: 8px;
  height: 8px;
  border: 2px solid #97b3ce;
  margin-top: 10px;
  border-radius: 50%;
  cursor: pointer;
}

#content > .dot > li:hover {
  background-color: #fff;
}

#content > .dot > li.active {
  background-color: #fff;
}

/* 出入场 */
#content > .list > .home .home1,
#content > .list > .home .home2 {
  transition: transform 1s, opacity 1s;
}

#content .course .plane1 {
  width: 359px;
  height: 283px;
  background: url(./imgs/plane1.png) no-repeat;
  position: absolute;
  left: 300px;
  top: -100px;
  transition: 1s;
}

#content .course .plane2 {
  width: 309px;
  height: 249px;
  background: url(./imgs/plane2.png) no-repeat;
  position: absolute;
  left: -100px;
  top: 200px;
  transition: 1s;
}

#content .course .plane3 {
  width: 230px;
  height: 182px;
  background: url(./imgs/plane3.png) no-repeat;
  position: absolute;
  left: 300px;
  top: 400px;
  transition: 1s;
}

#content .works .pencel1 {
  width: 180px;
  height: 97px;
  background: url(./imgs/pencel1.png) no-repeat;
  position: absolute;
  transition: 1s;
  left: 500px;
  top: 0;
}

#content .works .pencel2 {
  width: 268px;
  height: 38px;
  background: url(./imgs/pencel2.png) no-repeat;
  position: absolute;
  transition: 1s;
  left: 300px;
  top: 250px;
}

#content .works .pencel3 {
  width: 441px;
  height: 231px;
  background: url(./imgs/pencel3.png) no-repeat;
  position: absolute;
  transition: 1s;
  left: 650px;
  top: 300px;
}

#content > .list > .about .about3 > .item,
#content > .list > .team .team1,
#content > .list > .team .team2 {
  transition: 1s transform;
}

/* 音频 */
#head > .headMain .music {
  width: 14px;
  height: 14px;
  background: url(./imgs/musicon.gif);
  float: left;
  margin: 50px 0 0 5px;
  cursor: pointer;
}

/* 开机动画 */
#mask {
  height: 100%;
  width: 100%;
  position: absolute;
  z-index: 99;
}

#mask .up {
  width: 100%;
  height: 50%;
  background-color: deepskyblue;
  transition: 1s height;
}

#mask .down {
  width: 100%;
  height: 50%;
  background-color: deepskyblue;
  transition: 1s height;
  position: absolute;
  bottom: 0;
}

#mask .line {
  height: 4px;
  width: 0;
  background-color: #fff;
  position: absolute;
  left: 0;
  top: 50%;
  margin-top: -2px;
  z-index: 111;
  transition: width 1s;
}
